Dustproof cover for reflectors



Feb. 11, 1930. L. c. DQANE 4 DUSTPROOF COVER FOR REFLECTORS le April1928 2 Sheet-Sheet 1 i 40 av INVENTQR [erg Ciflaarre 4;, ATTORNEY L. c.DOANE 1,746,340

DUSTPROOF COVER FOR REFLECTORS I Feb. 11, 1930.

2 Sheets-Sheet 2 Filed April 14'. 1928 INVENTOR u 42 flaam: 9 .Y

Patented Feb. 11, 1930 UNITED STATES Parent orFicF.

LEROY C. DOANE, OF MERIDEN, CONNECTICUT, ASSIGNOR TO THE MILLER COMPANY,

OF MEBIDEN, CONNECTICUT, A CORPORATION OF CONNECTICUT DUSTPROOF COVERFOR REFLECTORS Application filed April 14,

. 1 by a glass cover or panel associated with.

means for preventing the entrance of dust, smoke, fumes, moisture orother foreign matter, thereby maintaining the lighting unit at highelficiency and preventing deterioration of the reflecting surfaces.

An object of the present invention is to provide an improved form ofclosure which would be eifective in preventing the entrance of suchforeign matter into the interior.

A more particular object of the invention is to provide a reflector witha gasket supporting ring which ring also supports a removable covermember.

,A further object of the invention is to so arrange the gasketsupporting ring and re flector that the ring may be held in place adjacent the mouth of the reflector by lugs carried by the ring.

A further object of the invention is to provide a dust proof closure forreflectors where in the glass cover member is secured in a ringdetachably carried by a ring associated with the reflector and whereinthe last mentioned ring is preferably not permanently fastened to thereflector.

A further object of the invention is to provide a closure member forreflectors wherein a ring surrounding the mouth of the reflector and asecond ring surrounding the cover member are arranged to interlock so asto slicetively hold the parts in alignment.

A further object of the invention is to provide a closure for thepurposes above referred to which is capable of inexpensive manufactureand assembly and whichdoes not require the use of tools when changinglamps or cleaning on the inside of the reflector.

A further object of the invention is to 50 provide an improved form ofgasket made out 1928. Serial No. 270,081.

of a metallic ring and a covering of asbestos or the like.

The accompanying drawings show, for purposes of illustrating theinvention, one of the many possible embodiments in which it may takeform,it being understood that the drawings are illustrative of theinvention rather than limiting the same.

In thesedrawings: V

Figure lis a top plan View of a reflector and cover taken from the upperor rear side of the reflector;

Figure 2 is a fragmentary sectional view taken on the line 22 of Figure1;

Figure 3 is a fragmentary sectional view taken on the line 3-3 of Figure1;

Figure 4 is an enlarged fragmentary plan view with parts broken away toshow interior construction; and taken in the direction of the arrow 4 ofFigure 2;

Figure 5 is an enlarged plan view of the lower ring and glass covermember taken in the direction at the arrow 5 of Figure 3;

Figure 6 is a fragmentary sectional view taken on the line 66 of Figure4 showing the upper ring and gasket and omitting the lower ring; and

Figure 7 is a view similar to Figure 6 showing both rings, gasket andglass cover.

In the drawings the invention is shown as being applied to a metalreflector 10 having a flanged lower edge or rim 11 merely shown forpurposes of illustration. Reflectors of this nature are generally maderound and are of comparatively large size.

An outer cast ring 12 is placed aboutthe open mouth of the ring. Thisring is slightly larger in diameter than the reflector and is providedas here shown with eight inwardly directed lugs 13 adapted to overlietherim of the reflector as more clearly indicated in Figures 2, 3 and i. Tospace the edge of the reflector from the body of this ring 12 smallspacerssuch as indicated by the dotted lines 14 in Figure 4, areprovided. .These inwardly projecting lugs 14 are adapted to support thering on the upper edge of the reflector and to align the ring andreflector. The ring 12 is also provided with a plurality of inwardlydirected lugs 15 placed between the lugs 13. The lugs 15, however,project inwardly from the lower edge-of the ring 12 and are stepped asindicated more clearly at 16 in Figure 6. They are adapted to support agasket 17 holding the gasket adjacent the lower face of the reflector asshown in Fig ures 6 and 7. The ring 12 is split as indicated at 18 sothat it may be sprung open to pass downwardly over the edge of thereflector.

The ring 12 is also provided, as here shown, with four lugs 19. Three ofthese lugs are rovided with drilled holes 20, and the other ug isprovided with a square hole 21. A lower cover-supporting ring 30 isprovided underneath the mouth of the reflector. This cover ring 30 isprovided with two lugs 31 and 31 which carry a hinge pin 32 on whichabolt 33 is pivoted. This bolt is a square at its lower end and extendsup through the hole 21 inthe outer ring 12. A'wing nut 34 is threaded onto the upper end of the bolt. The lower ring 30is also provided withthree counterbored holes 35adapted to receive the tip 36 of the hook 37.The hooks 37 pass upwardlythrough the round holes 20 in'the upper ring12 and are provided with wing nuts 38 as indicated.

The lower ring 30 is notched as indicated at 39 to receive thedownwardly and inwardly extending lugs 15 carried by the upper ring. Thelower ring is also provided with an inwardly extending flange 40 havingholes 41 as indicated. A glass cover plate is provided with a spuncopper band 42 having downwardly drawn threaded bushings 43 to receivescrews 44 which pass up through the holes 41 in the lower ring. Thesescrews and the copperring serve to provide a support and protection forthe glass plate.

When the reflector and cover are assembled as indicatedin the drawings,the wing nuts are tightened up so as to bring the copper ring 42 tightlyagainst the gasket 17 V and to bring the upper edge of the gaskettightly against the lower front face of the reflector. These partsareheld tightly together and the entrance'of dust, dirt, moisture andforeign matter is effectively prevented. When one desires to gain accessto the interior of the reflector, it is merely necessary to loosen thewing nuts 38 sufliciently to'releasc the tips'36 of the hooks 37 fromthe counterbored holes in the lower-ring whereupon the lower ring may beallowed to swing downwardly on the hinge pin 32. The gasket member 17does notfall out of place for it is held up against the reflector bymeans of'the inwardly projecting lugs 15 which extend underneath thegasket.

The preferred form of gasket 17 is composed of a metal core 43. and anasbestos cover 44'. The metal core may be made of a hard brass ring,split as indicated at 45, or a spiral may-be cut to provide the ring.

It is obvious that the invention may be embodied in many forms andconstructions with in the scope of the claims, and I wish it to beunderstood that the particular form shown is but one of the many forms.Various modifications and changes being possible, I do not otherwiselimit myself in any Way with respect thereto.

I claim:

1. In combination, a reflector having a normally horizontal rim, a ringoutside the rim resting on the upper side thereof, and having inwardlydirected lugs spaced below the reflector rim, and a gasket supported onthe lugs adjacent the rim.

2. In combination, a reflector having a normally horizontal rim, a splitring outside the rim, said ring having lugs resting on the upper sidethereof, and inwardly directed lugs spaced belowthe reflector rim, and agasket supported on the lugs adjacent the rim, the ring being capable ofbeing spread to permit placing it about the reflector.

3. In combination, a reflector having a normally horizontal rim, a ringoutside the rim, resting on the upper side thereof, and having inwardlydirected lugs spaced below the reflector rim, and a gasket supported onthe lugs adjacent the rim, the lugs being stepped to hold the gasketcentered.

4. In combination, a reflector having a normally horizontal rim, a ringoutside the rim, resting on the upper side thereof, and having inwardlydirected lugs spaced below the reflector rim, and a gasket supported onthe lugs adjacent the rim, the ring being further provided with spacersto separate the body of the ring from the rim of the reflector to permitdrainage.

5. In combination, an open mouth metal reflector having a normallyhorizontal rini, an upper ring outside the rim of the reflector, saidrim having inwardly directed upper lugs overlying the rim of thereflector and inwardly directed lower lugs spaced underneath the rim ofthe reflector and a plurality of outwardly extendinglugs, a gasket ringsupported on the lower lugs adjacent the rim of the reflector, a lowerring being smaller in diameter than the upper ring and provided withoutwardly extending lugs opposite the outwardly extending lugs on theupper ring, a glass cover carried in the lower ring, and clamping boltscarried by the outwardly eX- tending lugs for clamping the partstogether.

6. In combination, an open mouth metal reflector having a normallyhorizontal rim, an upper ring Outside the rim of the reflector, said rimhaving inwardly directed upper lugs overlying the rim of the reflectorand inwardly directed lower lugs spaced underneath the rimof thereflector and a plurality of outwardly extending lugs, a gasket ringsupported on the lower lugs adjacent the rim of the reflector, a lowerring being smaller in diameter than the upper ring and provided withoutwardly extending lugs opposite the outwardly extending lugs on theupper ring- ,and notches to accommodate the lower lugs on the upperring, a glass cover carried in the lower ring, and clamping boltscarried by the outwardly extending lugs for clamping the parts together.

7 In combination, a reflector having a rim, an upper ring carried by therim, a lower ring carrying a glass cover, a gasket'between the reflectorand cover ring, a supporting bolt pivoted on the lower ring and passingthrough a hole in the upper ring, a plurality of pairs of outwardlyextending lugs carried by the rings opposite one another, bolts havinghooked ends engaging the lugs on the lower ring and shanks passingthrough apertures in the upperring lugs, and nuts carried on all thebolts for clamping the parts together. 7

8. In combination, a reflector having a ri1n,an upper ring carried bythe rim, a lower ring carrying a glass cover, a gasket between thereflector and cover ring, a non-circular supporting bolt pivoted on thelower ring and passing through a non-circular hole in the upper ring, aplurality of pairs of outwardly extending lugs carried by the ringsopposite one another, bolts having hooked ends engaging the lugs on thelower ring and tween the reflector ring and the second ring.

12. A dust proof cover for reflectors comprising two rings, one fittingthe rim of the reflector and the other carrying a glass cover plate, aninterposed gasket ring supported on lugs carried by the first ring, andmeans to clamp the two rings together with the gasket ring between thereflector rim and the second ring, the second ring having notches toreceive the lugs and maintain the rings in alignment.

13. A dust proof cover for reflectors comprising an upper ring whichoverlies the rim of the reflector, the ring having inwardly directedlugs, a gasket carried on the lugs adjacent the reflector rim, and acover ring and glass cover hingedly supported from the first ring, thelugs holding the gasket in place when the cover ring is lowered.

Signed at Meriden, in the county of New Haven and State of Connecticut,this 11th day of April, 1928.

LEROY O. DOANE.

V shanks passing through apertures in the upper ring lugs, and nutscarried on all the bolts for clamping the parts together, the

rings having interlocking lugs and notches,

to maintain them in alignment.

9. In combinatlon, a reflector havlng a run, an upper ring earned by themm, a lower r1ng carrying a glass cover, a gasket supported by the upperring and carried between the reflector and cover ring, a supporting boltpivoted on the lower ring and passing through a hole in the upper ring,a plurality of pairs of outwardly extending lugs carried by the ringsopposite one another, bolts having hooked ends engaging the lugs on thelower ring and shanks passing through apertures in the upper ring lugs,and nuts carried a on all-the bolts for clamping the parts together.

10. In combination, a reflector, a ring supported about the rim of thereflector, a second ring carrying a glass cover plate, a gasketinterposed between the lower ring and reflector rim, the upper ringhaving means for supporting the gasket in position independent of thelower ring, and clamping means for securing the rings together with thegasket clamped between the lower ring and reflector 11. A dust proofcover for reflectors comprising two rings, one fitting the rim of thereflector and the other carrying a glass cover plate, an interposedgasket ring supported from the first ring, and means to clamp the tworings together with a gasket ring be-

